JP4528424B2 - Impeller and blade fixing method of fluid transmission device - Google Patents

Impeller and blade fixing method of fluid transmission device Download PDF

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Publication number
JP4528424B2
JP4528424B2 JP2000241196A JP2000241196A JP4528424B2 JP 4528424 B2 JP4528424 B2 JP 4528424B2 JP 2000241196 A JP2000241196 A JP 2000241196A JP 2000241196 A JP2000241196 A JP 2000241196A JP 4528424 B2 JP4528424 B2 JP 4528424B2
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Prior art keywords
blade
fixing
shell
transmission device
fluid transmission
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JP2002054716A (en
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敏英 青木
五味　　建児
健二 西野
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SANCALL CORPORATION
Yutaka Giken Co Ltd
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SANCALL CORPORATION
Yutaka Giken Co Ltd
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Description

【０００１】
【発明の属する技術分野】
本発明は、流体伝動装置の羽根車におけるシェルとブレードを固着し、又はシェルとロックアップ用のダンパースプリングプレートを固着する手段として、プレス装置を用いるが、どの部材にも穴を開けずに固着する手段に関する。
【０００２】
【従来の技術】
従来の流体伝動装置において、シェルにブレードを固着する手段としては、両部材を溶接又はろう付けして固着する手段や、ブレードに設けた爪をシェルに設けたスリットに嵌合し、かしめ又はろう付けにより固着する手段などが知られている（特開昭57-79359号公報）。しかし、溶接やろう付けを行なうと、シェルやブレードに熱歪みが発生することがあり、特にろう付けの場合は、ろう付け炉で大電カを消費し、酸化防止のフラックスを使用すれば該フラックスから有害ガスが発生するおそれがある。またブレードに設けた爪をシェルに設けたスリットに嵌合する工程を有するものは、組付けを容易にするために３次元形状のスリットとブレードの爪を高精度に作る必要があり、製造費が高くつく上に、スリットによってシェルの強度が低下したりブレードの固定力も弱く、スリットからシェル外に作動油が漏れて性能が著しく低下する不都合がある。
【０００３】
【発明が解決しようとする課題】
本発明は、前記の不都合がある溶按又はろう付けや、スリットと爪の嵌合による手段を用いることなく、流体伝動装置の羽根車におけるシェルとブレードを固着し、又はシェルとダンパスプリングプレートを固着することを課題とする。
【０００４】
【課題を解決するための手段】
前記の課題を解決するための手段は、各請求項に記載したとおりのものであり、このうち請求項１の手段は、流体伝動装置のシェルと固着用のフランジを一体に設けたブレードを金属板体から構成し、ブレードから屈曲した固定用のフランジとシェルを重ねて成形された、円筒形で底部を有する突起を複数個備え、該突起は、内側の部材の底部の外周に、外側の部材中に食い込む直径方向の膨出部を備え、各ブレードを固定する複数の突起のうち、少なくとも一つの突起が内側に向けて突出し、ブレードを固定する突起のうち、少なくとも一つの突起がブレードの径方向長さの中央より内側に位置していることを特徴とする。この手段によれば、フランジとシェルに形成した突起における部材の肉を径方向に食い込ませて一体にしたので、板体の固着強度が極めて大きく、穴が開けられていないので、作動流体の漏れがない。
【０００５】
また請求項２の手段は、流体伝動装置のシェルと固着用のフランジを一体に設けたブレードを金属板体から構成し、ブレードから屈曲した固定用のフランジとシェルを重ねて成形された、円筒形で底部を有し該底部の外周側を軸線方向に突出するリング状凸部とした突起を複数個備え、該突起は、内側の部材の底部の外周に、外側の部材中に食い込む直径方向の膨出部を備え、各ブレードを固定する複数の突起のうち、少なくとも一つの突起が内側に向けて突出し、ブレードを固定する突起のうち、少なくとも一つの突起がブレードの径方向長さの中央より内側に位置していることを特徴とする。この手段によれば、外側の部材の隅部から軸線方向に突出するリング状凸部を形成したことにより、内側の部材の底部の外周に外側の部材に食い込む径方向の膨出部が形成されやすく、確実な固着構造が得られる。
【０００６】
請求項３の手段は、流体伝動装置のシェルと固着用のフランジを一体に設けたブレードを金属板体で作り、シェルとフランジの２枚の金属板体を固着するために使用する金型として、ダイ穴に底面を設けたダイと該ダイ穴に出入りするパンチとを有し、該ダイとパンチの隙間が固着すべき前記の２枚の板体の厚さの和よりも小さく、ダイ穴の底面の隅部に軸線方向のリング溝を備える構成の金型を用意し、該金型に２枚の板体を重ねて挿入し、前記ダイとパンチで板体をプレスして突起を成形すると共に、該突起におけるダイ側の板体の隅部の肉をリング溝に押し出し、且つパンチ側の板体の隅部の肉を外側へ膨出させてダイ側の板体の縦肉部分に食い込ませて一体にし、ブレードを固定する突起のうち、少なくとも一つの突起がブレードの径方向長さの中央より内側に位置するようにし、各ブレードを固定する複数の突起のうち、少なくとも一つの突起が内側に向けて突出するようにしたことを特徴とする。この手段によれば、金型を１個又は複数個設けることにより、１回のプレスで金型の数と同数の固着が行なわれる。
【０００７】
請求項１〜３の手段は、各ブレードを固定する複数の突起のうち、少なくとも一つの突起が内側に向けて突出していることを特徴とする。この手段によれば、シェルの外面に近接して他部材配置する場合に、該他部材と干渉し易い位置の突起を内側に向けて突出させることができ、干渉を避けることができる。
【０００８】
請求項１〜３の手段は、タービンブレードを固定する突起のうち、少なくとも一つの突起がブレードの径方向長さの中央より内側に位置していることを特徴とする。タービンブレードにおいては、内周の出口側においてブレードを引き剥がす方向の大きい力を流体から受けるが、少なくとも一つの固定用突起を内周側に設けることにより、前記引き剥がす力に対して大きい固着力を生じさせることができる。
【０００９】
請求項４の手段は、請求項１又は２において、各ブレードのフランジの幅を内径側を大とし、内径側に設ける突起の直径を、他の範囲にある突起の直径より大径としたことを特徴とする。この手段によれば、ブレードの内周側で作用するブレードを引き剥す大きい力に対して、大径の突起によって充分な固着力を生じさせることができる。
【００１０】
請求項５の手段は、請求項ｌ，２又は４において、最外周にある突起と干渉しない形状をもつ、ロックアップ用のダンパースプリングプレートを、ブレードのフランジを固定する突起と同じ手段で形成する突起でタ一ビンシェルの外側に固定したことを特徴とする。この手段によれば、ダンパースプリングプレートを、ブレード固定用の突起と干渉することなく、また熱歪を生じさせることなくタービンシェルに固定することができる，
【００１１】
【発明の実施の形態】
以下、図面を参照して本発明の実施の形態を説明する。図１において、１は流体伝動装置の羽根車、２はシェル、３はブレードであり、該シェル２とブレード３は、鋼板のごとき金属板体で作られている。ブレード３は、図２に示すように、ブレード本体３ａと、該ブレード本体３ａから屈曲して形成された固着用のフランジ３ｂを備えており、フランジ３ｂは、図１に示す３個ずつの固着点４でシェル２に固着されている。
【００１２】
シェル２とブレード３の固着には、図３に示す金型５が用いられ、該金型５は、ダイ６とパンチ７を備える。ダイ６のダイ穴８は、円筒形の内周面８ａと、平らな底面８ｂと、ダイ穴８の隅部で底面８ｂに設けたリング溝８ｃを備える。パンチ７は、円柱形で平らな先端面を備え、ダイ穴８とパンチ７の隙間Ｓは、図４に示すシェル２とフランジ３ｂの厚さの和Ｔより小さく設定されている。
【００１３】
シェル２とフランジ３ｂを重ねて金型５に挿入し、前記固着点４の位置で図４に示すようにパンチ７を作動させてプレスすると、シェル２とフランジ３ｂは、一緒に絞られて縦肉部９ａ，９ｂがしごかれて突起９が成形される。このとき、縦肉部９ａに作用する圧力で、シェル２の隅部の肉がリング溝８ｃに押し出されて膨出部９ｃが形成され、この肉の流れと縦肉部９ａ，９ｂに作用する圧力差によって、フランジ３ｂの隅部の肉がシェル２の縦肉部分９ａに径方向に半径差ｒだけ突出して食い込む膨出部９ｄが形成され、これにより縦肉部９ａ，９ｂは一体化されて突起９となり、シェル２とブレード３は強固に固着する。
【００１４】
固着点４は、各フランジ３ｂについて２個又は３個ずつ設けるのが望ましく、軽量化のために、図５に示すようにフランジ３ｂの固着点４近傍以外の部分は切除するのが望ましい。
【００１５】
前記の実施の形態において、ダイ穴８の内周面８ａとパンチ７の外周面は円筒面であるが、これに抜き勾配を付してもよく、またダイ穴８の平らな底面８ｂ及びパンチ７の先端面を、緩やかな曲面又はテーパ面としてもよい。
【００１６】
図６は、前記のブレード固着手段を羽根車に用いた流体伝動装置としてトルクコンバータＡが示され、ポンプ１１、タービン１２、ステータ１３、クラッチプレート１４、ポンプ１１と一体のフロントカバー１５を備え、前記固定手段はタービン１２に実施されている。タービン１２は、シェル１２ａ内に、フランジ１２ｃを屈曲したブレード１２ｂが４個の突起１６ａ，１６ｂ，１６ｃ，１６ｄで固着されており、２個の突起１６ａ，１６ｃは、クラッチプレート１４との干渉を避けるために内向きに突出している。
【００１７】
図７に示すようにシェル１２ａの外周近くにはダンパスプリングプレート１７が突起１８で固着されており、３個の爪片１７ａがクラッチプレート１４のバネ保持部１４ａ内に設置されたバネに係合するために設けられる。また爪片１７ａと反対側には多数の切除部１７ｂが設けられブレードを固着するための最外周の突起１６ｄとの干渉を避けている。
【００１８】
図８において、ブレード固着用の突起１６ａ〜１６ｄのうち、最内周側の突起１６ａの外径Ｄ1が他の突起の外径Ｄ2，Ｄ3，Ｄ4より大きくされており、図２，５に見られるようにブレード３のフランジ３ｂの幅に対応した外径にしてある。これはブレード内周側では、ブレードに対してフランジを引き剥がす方向の大きい力が流体から作用することに対応したものである。
【００１９】
【発明の効果】
以上の説明から明らかなとおり、請求項１の手段によれば、流体伝動装置のシェルとブレードに、スリット開けやろう付けなどの加工を施さないですむので、加工費用が安くてすみ、作動油の漏れや熱歪みもなく高品質の流体伝動装置が得られる。またブレードから屈曲したフランジは、３次元形状をもつので、ブレードの強度が上がり、板厚を薄くして軽量化することができる。固着点を形成する突起は、内側部材の肉が外側部材に食い込んで結合しているので、強弱の方向性がなく、固着点が小さくても十分な強度が得られるなどの効果がある。
【００２０】
請求項２の手段によれば、請求項１について述べた前記の効果のほかに、固着点の突起において、外側の部材の隅部から軸線方向に突出するリング状の凸部を形成して内側の部材の径方向の膨出部を形成し易くしたので、確実な結合構造が得られる効果がある。
【００２１】
また請求項３の手段によれば、流体伝動装置のシェル２とブレード３は、一つ又は複数個の固着点が１回のプレスで簡単に固着され、従来のろう付け方式やかしめ方式で生じる前記の不都合は生じない効果がある。
【００２２】
また、請求項１〜３の手段によれば、シェルの外面に近接して配置する他部材とブレード固着用の突起が干渉しない利点がある。また、少なくとも一つの突起がブレードの中央より内側に設けたので内径側の固着力が大きく、また請求項４の手段によれば、内周側の固着用の突起を大径にしたことにより、流体からブレードの内周側に作用する強い力に耐えることができる利点がある。
【００２３】
請求項５の手段によれば、ダンパースプリングプレートを、ブレード固定用の突起と干渉させることなく、また熱歪を発生させることなく固定できる利点がある。
【図面の簡単な説明】
【図１】本発明の実施の一形態を示す流体伝動装置の羽根車の正面図
【図２】ブレードの斜視図
【図３】金型の縦断面図
【図４】工程説明図
【図５】ブレードの他の形態を示す斜視図
【図６】本発明を実施したトルクコンバータの断面図
【図７】タービンの斜視図
【図８】他のトルクコンバータの断面図
【符号の説明】
１ 羽根車 ２ シェル
３ ブレード ３ａ ブレード本体
３ｂ フランジ ４ 固着点
５ 金型 ６ ダイ
７ パンチ ８ ダイ穴
８ｃ リング溝 ９，１６ａ，１６ｂ 突起
９ａ，９ｂ 縦肉部 ９ｃ，９ｄ 膨出部[0001]
BACKGROUND OF THE INVENTION
The present invention uses a press device as a means for fixing a shell and a blade in an impeller of a fluid transmission device, or fixing a damper spring plate for lockup to the shell, but it is fixed without making a hole in any member. It is related with the means to do.
[0002]
[Prior art]
In a conventional fluid transmission device, as means for fixing the blade to the shell, means for fixing both members by welding or brazing, or by fitting a claw provided on the blade into a slit provided in the shell and caulking or brazing. A means for fixing by attaching is known (Japanese Patent Laid-Open No. 57-79359). However, when welding or brazing, thermal distortion may occur in the shell or blade. In particular, in the case of brazing, if a large amount of electricity is consumed in the brazing furnace and an antioxidant flux is used, There is a risk of generating harmful gases from the flux. In addition, those that have a process of fitting the claws provided on the blade to the slits provided on the shell need to make a three-dimensional slit and blade claws with high accuracy in order to facilitate assembly, In addition, the strength of the shell is reduced by the slit and the fixing force of the blade is weak, and there is a disadvantage that the hydraulic oil leaks from the slit to the outside of the shell and the performance is significantly reduced.
[0003]
[Problems to be solved by the invention]
The present invention secures the shell and the blade in the impeller of the fluid transmission device or the shell and the damper spring plate without using the above-mentioned disadvantageous hot metal or brazing or means by fitting the slit and the claw. The problem is to adhere.
[0004]
[Means for Solving the Problems]
Means for solving the above-mentioned problems are as described in each claim, and among them, the means of claim 1 is a metal blade having a fluid transmission device shell and a fixing flange integrally provided. A plurality of cylindrical projections having a bottom portion formed by overlapping a fixing flange and a shell bent from a blade are formed on the outer periphery of the bottom portion of the inner member. A bulging portion in the diametrical direction that bites into the member, and at least one of the plurality of protrusions that fix each blade protrudes inward, and at least one of the protrusions that fixes the blade It is located inside the center of radial direction length, It is characterized by the above-mentioned. According to this means, since the flesh of the member formed on the projection formed on the flange and the shell is integrated in the radial direction, the fixing strength of the plate body is extremely large and the hole is not perforated. There is no.
[0005]
According to a second aspect of the present invention, there is provided a cylinder in which a blade in which a shell of a fluid transmission device and a fixing flange are integrally provided is formed of a metal plate, and a fixing flange bent from the blade and the shell are overlapped. A plurality of protrusions, each having a bottom and a ring-shaped protrusion protruding in the axial direction on the outer peripheral side of the bottom, the protrusions digging into the outer member at the outer periphery of the bottom of the inner member Of the plurality of protrusions that fix each blade, and at least one protrusion protrudes inward, and at least one protrusion among the protrusions that fixes the blade is the center of the radial length of the blade. It is characterized by being located further inside . According to this means, by forming the ring-shaped convex portion protruding in the axial direction from the corner portion of the outer member, a radially bulging portion that bites into the outer member is formed on the outer periphery of the bottom portion of the inner member. Easy and reliable fixing structure can be obtained.
[0006]
According to a third aspect of the present invention, as a die used for fixing a metal plate body of a shell and a flange, a blade in which a shell of a fluid transmission device and a flange for fixing are integrally provided is made of a metal plate body. A die having a bottom surface in the die hole and a punch that goes in and out of the die hole, and the gap between the die and the punch is smaller than the sum of the thicknesses of the two plates to be fixed, Prepare a mold with a ring groove in the axial direction at the corner of the bottom of the metal plate, insert two plates into the mold and insert them into the mold, and press the plate with the die and punch to form protrusions At the same time, the meat at the corner of the plate on the die side of the protrusion is pushed into the ring groove, and the meat at the corner of the plate on the punch side is bulged outwardly to the vertical wall portion of the plate on the die side. bite allowed to integrally, of projections for fixing the blade, at least one projection blade Direction so as to be positioned more inside length middle, among the plurality of projections for fixing the blade, wherein at least one protrusion is adapted to protrude inwardly. According to this means, by providing one or a plurality of dies, the same number of fixings as the number of dies can be performed by one press.
[0007]
Means of claims 1 to 3, among the plurality of projections for fixing the blade, wherein at least one protrusion protrudes inward. According to this means, when the other member is arranged close to the outer surface of the shell, the protrusion at a position that easily interferes with the other member can be protruded inward, and interference can be avoided.
[0008]
According to the first to third aspects , at least one of the protrusions for fixing the turbine blade is located on the inner side of the center in the radial length of the blade. In the turbine blade, a large force in the direction of peeling off the blade is received from the fluid on the outlet side of the inner periphery, but by providing at least one fixing protrusion on the inner periphery side, a large fixing force with respect to the peeling force is provided. Can be generated.
[0009]
According to a fourth aspect of the present invention, in the first or second aspect, the width of the flange of each blade is larger on the inner diameter side, and the diameter of the protrusion provided on the inner diameter side is larger than the diameter of the protrusion in another range. It is characterized by. According to this means, a sufficient fixing force can be generated by the large-diameter protrusion with respect to the large force that peels off the blade acting on the inner peripheral side of the blade.
[0010]
According to a fifth aspect of the present invention , in the first, second, or fourth aspect , the damper spring plate for locking up having a shape that does not interfere with the outermost protrusion is formed by the same means as the protrusion that fixes the flange of the blade. The protrusion is fixed to the outside of the turbine shell. According to this means, the damper spring plate can be fixed to the turbine shell without interfering with the blade fixing protrusion and without causing thermal distortion.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is an impeller of a fluid transmission device, 2 is a shell, 3 is a blade, and the shell 2 and the blade 3 are made of a metal plate such as a steel plate. As shown in FIG. 2, the blade 3 includes a blade main body 3a and a fixing flange 3b formed by bending from the blade main body 3a. Fixed to the shell 2 at point 4.
[0012]
A mold 5 shown in FIG. 3 is used for fixing the shell 2 and the blade 3, and the mold 5 includes a die 6 and a punch 7. The die hole 8 of the die 6 includes a cylindrical inner peripheral surface 8 a, a flat bottom surface 8 b, and a ring groove 8 c provided on the bottom surface 8 b at the corner of the die hole 8. The punch 7 has a cylindrical and flat tip surface, and the gap S between the die hole 8 and the punch 7 is set smaller than the sum T of the thicknesses of the shell 2 and the flange 3b shown in FIG.
[0013]
When the shell 2 and the flange 3b are overlapped and inserted into the mold 5, and the punch 7 is operated and pressed at the position of the fixing point 4 as shown in FIG. 4, the shell 2 and the flange 3b are vertically squeezed together. The protrusions 9 are formed by squeezing the meat portions 9a and 9b. At this time, with the pressure acting on the vertical wall portion 9a, the meat at the corner of the shell 2 is pushed out into the ring groove 8c to form the bulging portion 9c, which acts on the flow of the meat and the vertical wall portions 9a, 9b. Due to the pressure difference, a bulging portion 9d is formed in which the meat at the corner of the flange 3b protrudes into the vertical wall portion 9a of the shell 2 by a radial difference r in the radial direction, thereby integrating the vertical wall portions 9a and 9b. As a result, the shell 2 and the blade 3 are firmly fixed.
[0014]
It is desirable to provide two or three fixing points 4 for each flange 3b, and in order to reduce the weight, it is desirable to cut off portions other than the vicinity of the fixing point 4 of the flange 3b as shown in FIG.
[0015]
In the above-described embodiment, the inner peripheral surface 8a of the die hole 8 and the outer peripheral surface of the punch 7 are cylindrical surfaces. However, a draft may be given to the inner peripheral surface 8a and the flat bottom surface 8b of the die hole 8 and the punch. 7 may be a gently curved surface or a tapered surface.
[0016]
6 shows a torque converter A as a fluid transmission device using the blade fixing means for an impeller, and includes a pump 11, a turbine 12, a stator 13, a clutch plate 14, and a front cover 15 integrated with the pump 11. The fixing means is implemented in the turbine 12. In the turbine 12, a blade 12b having a bent flange 12c is fixed in a shell 12a by four protrusions 16a, 16b, 16c, and 16d, and the two protrusions 16a and 16c cause interference with the clutch plate 14. Protrusively inward to avoid.
[0017]
As shown in FIG. 7, a damper spring plate 17 is fixed by a protrusion 18 near the outer periphery of the shell 12a, and the three claw pieces 17a engage with a spring installed in the spring holding portion 14a of the clutch plate 14. To be provided. In addition, a large number of cut portions 17b are provided on the side opposite to the claw pieces 17a to avoid interference with the outermost protrusion 16d for fixing the blade.
[0018]
8, the outer diameter D 1 of the innermost peripheral projection 16a among the projections 16a to 16d for fixing the blade is larger than the outer diameters D 2 , D 3 and D 4 of the other projections. , 5, the outer diameter corresponds to the width of the flange 3 b of the blade 3. This corresponds to the fact that on the blade inner peripheral side, a large force acting in the direction of peeling the flange against the blade acts from the fluid.
[0019]
【The invention's effect】
As is clear from the above description, according to the means of claim 1, the shell and blade of the fluid transmission device need not be subjected to processing such as slitting or brazing, so that the processing cost can be reduced, and the hydraulic oil A high-quality fluid transmission device can be obtained without leakage or thermal distortion. Further, since the flange bent from the blade has a three-dimensional shape, the strength of the blade is increased, and the thickness can be reduced by reducing the plate thickness. The protrusions that form the fixing points have the effect that the flesh of the inner member bites into and joins the outer member, so that there is no direction of strength and that sufficient strength can be obtained even if the fixing points are small.
[0020]
According to the second aspect of the present invention, in addition to the above-described effect of the first aspect, the ring-shaped convex portion protruding in the axial direction from the corner portion of the outer member is formed on the inside of the protrusion at the fixing point. Since the bulging portion in the radial direction of the member is easily formed, there is an effect that a reliable coupling structure can be obtained.
[0021]
According to the third aspect of the invention, the shell 2 and the blade 3 of the fluid transmission device are easily fixed at one or more fixing points by a single press, and are generated by a conventional brazing method or a caulking method. There is an effect that the above disadvantages do not occur.
[0022]
Further , according to the first to third aspects, there is an advantage that the other member arranged close to the outer surface of the shell does not interfere with the blade fixing projection. Also, large adhesive force on the inner diameter side because at least one projection is provided inside the center of the blade, According to the measure of claim 4, by which the projection for fixing the inner circumference side to the large diameter, There is an advantage that it is possible to withstand a strong force acting on the inner peripheral side of the blade from the fluid.
[0023]
According to the fifth aspect of the present invention, there is an advantage that the damper spring plate can be fixed without causing interference with the blade fixing protrusion and without causing thermal distortion.
[Brief description of the drawings]
FIG. 1 is a front view of an impeller of a fluid transmission device according to an embodiment of the present invention. FIG. 2 is a perspective view of a blade. FIG. 3 is a longitudinal sectional view of a mold. FIG. 6 is a sectional view of a torque converter embodying the present invention. FIG. 7 is a perspective view of a turbine. FIG. 8 is a sectional view of another torque converter.
DESCRIPTION OF SYMBOLS 1 Impeller 2 Shell 3 Blade 3a Blade body 3b Flange 4 Fixing point 5 Die 6 Die 7 Punch 8 Die hole 8c Ring groove 9, 16a, 16b Protrusion 9a, 9b Vertical part 9c, 9d Swelling part

Claims (5)

流体伝動装置のシェルと固着用のフランジを一体に設けたブレードを金属板体から構成し、ブレードから屈曲した固定用のフランジとシェルを重ねて成形された、円筒形で底部を有する突起を複数個備え、該突起は、内側の部材の底部の外周に、外側の部材中に食い込む直径方向の膨出部を備え、各ブレードを固定する複数の突起のうち、少なくとも一つの突起が内側に向けて突出し、ブレードを固定する突起のうち、少なくとも一つの突起がブレードの径方向長さの中央より内側に位置していることを特徴とする流体伝動装置の羽根車。 A blade having a fluid transmission device shell and a fixing flange integrally formed from a metal plate, and a plurality of cylindrical projections having a bottom portion formed by overlapping the fixing flange and the shell bent from the blade. The protrusion includes a bulging portion in a diametrical direction that bites into the outer member on the outer periphery of the bottom of the inner member , and at least one of the plurality of protrusions fixing each blade faces inward. An impeller of a fluid transmission device , wherein at least one of the protrusions that protrude and fix the blade is located inside the center of the radial length of the blade . 流体伝動装置のシェルと固着用のフランジを一体に設けたブレードを金属板体から構成し、ブレードから屈曲した固定用のフランジとシェルを重ねて成形された、円筒形で底部を有し該底部の外周側を軸線方向に突出するリング状凸部とした突起を複数個備え、該突起は、内側の部材の底部の外周に、外側の部材中に食い込む直径方向の膨出部を備え、各ブレードを固定する複数の突起のうち、少なくとも一つの突起が内側に向けて突出し、ブレードを固定する突起のうち、少なくとも一つの突起がブレードの径方向長さの中央より内側に位置していることを特徴とする流体伝動装置の羽根車。 A blade in which a shell of a fluid transmission device and a fixing flange are integrally provided is formed of a metal plate, and is formed by overlapping a fixing flange and a shell bent from the blade, and has a cylindrical bottom portion. A plurality of protrusions with ring-shaped protrusions projecting in the axial direction on the outer peripheral side, and the protrusions have a bulging portion in the diametrical direction that bites into the outer member on the outer periphery of the bottom of the inner member , Among the plurality of protrusions that fix the blade, at least one protrusion protrudes inward, and among the protrusions that fix the blade, at least one protrusion is located inside the center of the radial length of the blade. impeller of the fluid transmission device according to claim. 流体伝動装置のシェルと固着用のフランジを一体に設けたブレードを金属板体で作り、シェルとフランジの２枚の金属板体を固着するために使用する金型として、ダイ穴に底面を設けたダイと該ダイ穴に出入りするパンチとを有し、該ダイとパンチの隙間が固着すべき前記の２枚の板体の厚さの和よりも小さく、ダイ穴の底面の隅部に軸線方向のリング溝を備える構成の金型を用意し、該金型に２枚の板体を重ねて挿入し、前記ダイとパンチで板体をプレスして突起を成形すると共に、該突起におけるダイ側の板体の隅部の肉をリング溝に押し出し、且つパンチ側の板体の隅部の肉を外側へ膨出させてダイ側の板体の縦肉部分に食い込ませて一体にし、ブレードを固定する突起のうち、少なくとも一つの突起がブレードの径方向長さの中央より内側に位置するようにし、各ブレードを固定する複数の突起のうち、少なくとも一つの突起が内側に向けて突出するようにしたことを特徴とする、流体伝動装置のブレード固定方法。A blade with a fluid transmission device shell and a fixing flange integrated with each other is made of a metal plate, and the die hole is provided with a bottom surface as a mold used to fix the two metal plates of the shell and flange. The die and the punch that goes in and out of the die hole, and the gap between the die and the punch is smaller than the sum of the thicknesses of the two plates to be fixed, and the axis line at the corner of the bottom surface of the die hole A mold having a ring groove in a direction is prepared, and two plate bodies are overlapped and inserted into the mold, and the plate body is pressed with the die and punch to form a projection, and the die at the projection is formed. Extrude the meat at the corner of the plate on the side into the ring groove, bulge the meat at the corner of the plate on the punch side to the outside, and bite it into the vertical part of the plate on the die side to make it an integral blade At least one of the projections that secure the blade is the center of the radial length of the blade. So as to be positioned on the inside, among a plurality of projections for fixing the blade, wherein at least one protrusion is adapted to protrude inwardly, blade fixing method for the hydraulic power transmission device. 請求項１又は２において、各ブレードのフランジの幅を内径側を大とし、内径側に設ける突起の直径を、他の範囲にある突起の直径より大径としたことを特徴とする、流体伝動装置の羽根車。 The fluid transmission according to claim 1 or 2 , wherein the width of the flange of each blade is larger on the inner diameter side, and the diameter of the protrusion provided on the inner diameter side is larger than the diameter of the protrusion in the other range. Equipment impeller. 請求項１，２又は４において、最外周にある突起と干渉しない形状をもつ、ロックアップ用のダンパースプリングプレートを、ブレードのフランジを固定する突起と同じ手段で形成する突起でタービンシェルの外側に固定したことを特徴とする、流体伝動装置の羽根車。 5. A lock spring damper spring plate having a shape that does not interfere with a projection on the outermost periphery according to claim 1, 2 or 4 , and a projection formed by the same means as the projection for fixing the blade flange to the outside of the turbine shell. An impeller of a fluid transmission device characterized by being fixed.
JP2000241196A 1999-08-27 2000-08-09 Impeller and blade fixing method of fluid transmission device Expired - Lifetime JP4528424B2 (en)

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JP2000241196A JP4528424B2 (en) 2000-08-09 2000-08-09 Impeller and blade fixing method of fluid transmission device
US09/645,519 US6371728B1 (en) 1999-08-27 2000-08-25 Impeller for hydraulic power transmitting apparatus and method of fixing blades of hydraulic power transmitting apparatus

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JP2000241196A JP4528424B2 (en) 2000-08-09 2000-08-09 Impeller and blade fixing method of fluid transmission device

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001090802A (en) * 1999-08-27 2001-04-03 Yutaka Giken Co Ltd Lap-joining structure and method of sheel and blade of fluid transmision device

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JPH0571612A (en) * 1991-09-18 1993-03-23 Daikin Mfg Co Ltd Construction and mounting method of driven plate of lockup device for torque converter
JPH07132388A (en) * 1993-09-17 1995-05-23 Nissan Motor Co Ltd Method for welding blade of torque converter
JPH08281353A (en) * 1995-04-11 1996-10-29 Toto Ltd Method and device for manufacturing piping case

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001090802A (en) * 1999-08-27 2001-04-03 Yutaka Giken Co Ltd Lap-joining structure and method of sheel and blade of fluid transmision device

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